package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.wf.captcha.SpecCaptcha;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;

import java.nio.charset.StandardCharsets;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;



@Service
public class LoginServiceImpl implements LoginService {

    // 建议修改为
    @Autowired
    private RedisTemplate<String, String> redisTemplate;

    @Autowired
    private SystemUserMapper systemUserMapper;




    @Override
    public CaptchaVo getCaptcha() {
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48,
                4);
        specCaptcha.setCharType(SpecCaptcha.TYPE_DEFAULT);

        String code = specCaptcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
        String image = specCaptcha.toBase64();
        //对值的设置
        redisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS); // Store the captcha code in Redis for 5 minutes
        return new CaptchaVo(image,key);
    }

    @Override
    public String login(LoginVo loginVo) {
        if(!StringUtils.hasText(loginVo.getCaptchaCode())){
            throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }

        //2.检验验证码
        String code = redisTemplate.opsForValue().get(loginVo.getCaptchaKey());

        if(code == null){
            throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
       if(!code.equals(loginVo.getCaptchaCode().toLowerCase())){
           throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
       }

       //3.检验用户是否存在
        SystemUser systemUser = systemUserMapper.selectOneByUsername(loginVo.getUsername());
       if(systemUser == null){
              throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
       }

       if(systemUser.getStatus() == BaseStatus.DISABLE){
           throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
       }

       //4.检验密码
        if(!systemUser.getPassword().equals(DigestUtils.md5DigestAsHex(loginVo.getPassword().getBytes(StandardCharsets.UTF_8)))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }



        Map<String, Object> claims = Map.of(
                "userId", systemUser.getId(),
                "username", systemUser.getUsername()
        );
        return JwtUtil.generateToken("USER_INFO", claims);
    }

    @Override
    public SystemUserInfoVo getLoginUserInfo(Long userId) {
        SystemUser systemUser = systemUserMapper.selectById(userId);

        SystemUserInfoVo systemUserInfoVo = new SystemUserInfoVo();
        systemUserInfoVo.setName(systemUser.getName());
        systemUserInfoVo.setAvatarUrl(systemUser.getAvatarUrl());
        return systemUserInfoVo;
    }
}
